/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    color: #4CAF50;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #45a049;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.section-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #4CAF50;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #4CAF50;
    color: #fff;
    border: 2px solid #4CAF50;
}

.btn-primary:hover {
    background-color: #45a049;
    border-color: #45a049;
    color: #fff;
}

.btn-secondary {
    background-color: #4CAF50;
    color: #fff;
    border: 2px solid #4CAF50;
    margin-left: 15px;
}

.btn-secondary:hover {
    background-color: #45a049;
    border-color: #45a049;
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    color: #4CAF50;
    border: 1px solid #4CAF50;
    padding: 8px 20px;
}

.btn-outline:hover {
    background-color: #4CAF50;
    color: #fff;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
}

.logo img {
    height: 50px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: #333;
    font-weight: 500;
    position: relative;
    padding-bottom: 5px;
}

nav ul li a:hover, nav ul li a.active {
    color: #4CAF50;
}

nav ul li a.active:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #4CAF50;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 英雄区域样式 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(76, 175, 80, 0.8)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    color: #fff;
    padding: 160px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-btns {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 特性区域样式 */
.features {
    padding: 80px 0;
    background-color: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-item {
    text-align: center;
    padding: 40px 30px;
    border-radius: 12px;
    background: #fff;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(76, 175, 80, 0.1);
}

.feature-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 15px 35px rgba(76, 175, 80, 0.15);
    border-color: transparent;
}

.feature-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(76, 175, 80, 0.05), rgba(76, 175, 80, 0));
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-item:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 2.5rem;
    color: #4CAF50;
    margin-bottom: 20px;
}

.feature-item h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

/* 产品区域样式 */
.products {
    padding: 100px 0;
    background-color: #fff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    margin-top: 30px;
}

.product-item {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid rgba(76, 175, 80, 0.1);
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.05);
}

.product-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(76, 175, 80, 0.15);
    border-color: transparent;
}

.product-item img {
    height: 160px;      /* 你可以根据实际需求调整高度 */
    object-fit: contain; /* 保证图片不变形，完整显示 */
    width: 100%;        /* 或者设置为auto，视具体需求 */
    display: block;
    margin: 0 auto;
}

.product-item:hover img {
    transform: scale(1.1);
}

.product-item h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #333;
}

.product-item p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.page-header {
    background: linear-gradient(rgba(76, 175, 80, 0.9), rgba(76, 175, 80, 0.9));
    color: #fff;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.8rem;
    margin-bottom: 15px;
    font-weight: 700;
}

.page-header p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
    opacity: 0.9;
}

.product-detail {
    padding: 100px 0;
}

.product-detail.bg-light {
    background-color: #f8f9fa;
}

.product-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: center;
}

.product-row.reverse {
    grid-template-columns: 1.5fr 1fr;
}

.product-row.reverse .product-image {
    order: 2;
}

.product-image {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.5s ease;
}

.product-image:hover {
    transform: scale(1.02);
}

.product-image img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.product-info h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: #333;
}

.product-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
}

.product-features {
    margin-bottom: 30px;
}

.product-features h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.product-features ul li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    color: #666;
}

.product-features ul li i {
    color: #4CAF50;
    margin-right: 10px;
}

.product-specs {
    margin-bottom: 30px;
}

.product-specs h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.product-specs table {
    width: 100%;
    border-collapse: collapse;
}

.product-specs table tr {
    border-bottom: 1px solid #eee;
}

.product-specs table td {
    padding: 12px;
    color: #666;
}

.product-specs table td:first-child {
    font-weight: 500;
    color: #333;
    width: 40%;
}

@media (max-width: 1024px) {
    .product-row,
    .product-row.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-row.reverse .product-image {
        order: 1;
    }

    .product-info h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 40px 0;
    }

    .page-header h1 {
        font-size: 2.2rem;
    }

    .product-detail {
        padding: 60px 0;
    }

    .product-info h2 {
        font-size: 1.8rem;
    }

    .product-features h3,
    .product-specs h3 {
        font-size: 1.3rem;
    }
}

/* 解决方案区域样式 */
.solutions {
    padding: 80px 0;
    background-color: #fff;
}

.solution-grid {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.solution-item {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: center;
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    transition: all 0.4s ease;
    box-shadow: 0 5px 20px rgba(76, 175, 80, 0.08);
}

.solution-item:nth-child(even) {
    grid-template-columns: 2fr 1fr;
}

.solution-item:nth-child(even) .solution-img {
    order: 2;
}

.solution-img {
    overflow: hidden;
    border-radius: 12px;
}

.solution-img img {
    width: 100%;
    border-radius: 12px;
    transition: transform 0.5s ease;
}

.solution-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(76, 175, 80, 0.15);
}

.solution-item:hover .solution-img img {
    transform: scale(1.05);
}

.solution-content h3 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.solution-content p {
    margin-bottom: 20px;
    color: #666;
}

/* CTA区域样式 */
.cta {
    padding: 80px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('../images/cta-bg.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 页脚样式 */
footer {
    background-color: #222;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 40px;
    margin-bottom: 20px;
}

.footer-about p {
    margin-bottom: 20px;
    color: #ccc;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #333;
    color: #fff;
    border-radius: 50%;
    transition: background-color 0.3s ease;
}

.social-links a:hover {
    background-color: #4CAF50;
}

footer h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #fff;
}

footer ul li {
    margin-bottom: 10px;
}

footer ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

footer ul li a:hover {
    color: #4CAF50;
}

.footer-contact ul li {
    display: flex;
    align-items: center;
    color: #ccc;
}

.footer-contact ul li i {
    margin-right: 10px;
    color: #4CAF50;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #444;
    color: #ccc;
}

.footer-bottom a {
    color: #ccc;
}

.footer-bottom a:hover {
    color: #4CAF50;
}

/* 关于我们页面样式 */
.about-intro {
    padding: 80px 0;
    background-color: #fff;
}

.about-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: center;
}

.about-image img {
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-image img:hover {
    transform: scale(1.02);
}

.about-content h2 {
    font-size: 2.2rem;
    margin-bottom: 25px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.about-content h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #4CAF50;
}

.about-content p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-culture {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.culture-item {
    background-color: #fff;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.culture-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.culture-icon {
    font-size: 2.5rem;
    color: #4CAF50;
    margin-bottom: 25px;
}

.culture-item h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.culture-item p {
    color: #666;
    line-height: 1.6;
}

/* 联系信息卡片样式 */
.contact-info {
    padding: 80px 0;
    background-color: #fff;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 40px;
}

.contact-card {
    background-color: #f8f9fa;
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    font-size: 2.5rem;
    color: #4CAF50;
    margin-bottom: 25px;
}

.contact-card h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.contact-card p {
    color: #666;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* 联系表单样式 */
.contact-form {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.form-container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #4CAF50;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-submit {
    text-align: center;
    margin-top: 30px;
}

.form-submit .btn {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* 地图区域样式 */
.contact-map {
    padding: 80px 0;
    background-color: #fff;
}

.map-container {
    margin-top: 40px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.map-container img {
    width: 100%;
    display: block;
}

/* 合作伙伴部分样式 */
.about-partners {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 50px;
}

.partner-item {
    background-color: #fff;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.partner-item img {
    max-width: 180px;
    height: auto;
    transition: transform 0.3s ease;
}

.partner-item:hover img {
    transform: scale(1.05);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .feature-grid, .product-grid, .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-container {
        padding: 30px;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-card {
        padding: 30px 20px;
    }
    
    nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: #fff;
        transition: left 0.3s ease;
    }
    
    nav.active {
        left: 0;
    }
    
    nav ul {
        flex-direction: column;
        padding: 20px;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .solution-item, .solution-item:nth-child(even) {
        grid-template-columns: 1fr;
    }
    
    .solution-item:nth-child(even) .solution-img {
        order: 1;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-btns .btn {
        margin-bottom: 15px;
    }
}

@media (max-width: 576px) {
    .feature-grid, .product-grid, .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero {
        padding: 80px 0;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
}

/* 解决方案页面样式 */
.solution-detail {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.solution-detail.bg-light {
    background-color: #f8f9fa;
}

.solution-row {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.solution-row.reverse {
    grid-template-columns: 1.2fr 1fr;
}

.solution-row.reverse .solution-image {
    order: 2;
}

.solution-image {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 15px 30px rgba(76, 175, 80, 0.1);
    transition: transform 0.5s ease;
}

.solution-image:hover {
    transform: scale(1.02);
}

.solution-image img {
    width: 100%;
    display: block;
    transition: transform 0.5s ease;
}

.solution-info {
    padding: 20px;
}

.solution-info h2 {
    font-size: 2.2rem;
    margin-bottom: 20px;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.solution-info h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #4CAF50;
}

.solution-description {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 30px;
}

.solution-features {
    margin-bottom: 30px;
}

.solution-features h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.solution-features ul {
    list-style: none;
    padding: 0;
}

.solution-features ul li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    color: #666;
    font-size: 1.1rem;
}

.solution-features ul li i {
    color: #4CAF50;
    margin-right: 10px;
    font-size: 1.2rem;
}

.solution-cases {
    margin-bottom: 30px;
}

.solution-cases h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.case-item {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(76, 175, 80, 0.05);
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(76, 175, 80, 0.1);
}

.case-icon {
    width: 60px;
    height: 60px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.case-icon i {
    font-size: 1.8rem;
    color: #4CAF50;
}

.case-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.case-item p {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 1024px) {
    .solution-row,
    .solution-row.reverse {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .solution-row.reverse .solution-image {
        order: 1;
    }

    .solution-info h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .solution-detail {
        padding: 60px 0;
    }

    .solution-info h2 {
        font-size: 1.8rem;
    }

    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .case-grid {
        grid-template-columns: 1fr;
    }

    .solution-features ul li {
        font-size: 1rem;
    }
}

.modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0; top: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.6);
}
.modal-content {
    background: #fff;
    margin: 10% auto;
    padding: 30px 20px 20px 20px;
    border-radius: 8px;
    width: 300px;
    text-align: center;
    position: relative;
}
.close-btn {
    position: absolute; right: 10px; top: 10px;
    font-size: 24px; cursor: pointer;
}
.qr-img {
    width: 180px; height: 180px; margin-bottom: 10px;
}